Cita APA (7th ed.)
Lawrence, R. R., & Richards, H. E. (1953). Principles of alternating-current machinery (4th ed.). McGraw-Hill Book.
Cita Chicago (17th ed.)
Lawrence, Ralph R., i Henry E. Richards. Principles of Alternating-current Machinery. 4th ed. New York: McGraw-Hill Book, 1953.
Cita MLA (9th ed.)
Lawrence, Ralph R., i Henry E. Richards. Principles of Alternating-current Machinery. 4th ed. McGraw-Hill Book, 1953.
Atenció: Aquestes cites poden no estar 100% correctes.